What common calibres are in the UK?

[Midnitemo]

.177 and .22 pellets even if you only have one of these calibres there just so cheap it would be madness to not have a stock of both then as has already been said 9mm .223 and .308 all in common use by military and police aswell as recreational shooters then I would say .38 spl as the police and most large animal vets still have and use these and finally good old 12g and .22lr ubiquitous in countryside pursuits and living.